/* Copyright 2020 Andrew Kannan
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include QMK_KEYBOARD_H


// Each layer gets a name for readability, which is then used in the keymap matrix below.
// The underscores don't mean anything - you can have a layer called STUFF or any other name.
// Layer names don't all need to be of the same length, obviously, and you can also skip them
// entirely and just use numbers.
enum layer_names {
    _BASE,
    _FN1,
    _FN2,
    _FN3
};

const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
    [_BASE] = LAYOUT_rwkl(
        QK_GESC, KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC, KC_RBRC, KC_BSPC, KC_PGUP,
        KC_TAB,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,          KC_ENT,  KC_PGDN,
        KC_LSFT,          KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_RSFT, KC_UP,   TG(_FN3),
        KC_LCTL, KC_LGUI, KC_LALT,                            KC_SPC,                    MO(_FN1),MO(_FN2),         KC_LEFT, KC_DOWN, KC_RGHT
    ),

    [_FN1] = LAYOUT_rwkl(
        KC_GRV,  KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR, KC_ASTR, KC_TRNS, KC_TRNS, KC_LPRN, KC_RPRN, KC_TRNS, KC_HOME,
        UG_TOGG, KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSLS,          KC_TRNS, KC_END,
        KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_DOT,  KC_TRNS, KC_TRNS, KC_MINS, KC_PLUS, KC_ASTR, KC_TRNS, KC_EQL,  KC_INS,  KC_PSCR,
        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS
    ),

    [_FN2] = LAYOUT_rwkl(
        KC_PWR,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_TRNS, KC_TRNS, KC_TRNS, KC_MPLY, KC_MPRV, KC_MNXT, KC_DEL,  KC_VOLU,
        KC_SLEP, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_VOLD,
        KC_WAKE,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_PSCR, KC_MUTE,
        QK_BOOT, KC_TRNS, KC_TRNS,                            KC_TRNS,                   KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS
    ),

    [_FN3] = LAYOUT_rwkl(
        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
        KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,          KC_TRNS, KC_TRNS,
        KC_TRNS,          KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,
        KC_TRNS, KC_TRNS, KC_TRNS,                            KC_TRNS,                   KC_TRNS, MO(_FN1),         KC_TRNS, KC_TRNS, KC_TRNS
    ),
};

const rgblight_segment_t PROGMEM my_layer0_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_RED}
);
const rgblight_segment_t PROGMEM my_layer1_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_CYAN}
);
const rgblight_segment_t PROGMEM my_layer2_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_PURPLE}
);
const rgblight_segment_t PROGMEM my_layer3_layer[] = RGBLIGHT_LAYER_SEGMENTS(
    {0, 3, HSV_GREEN}
);

const rgblight_segment_t* const PROGMEM my_rgb_layers[] = RGBLIGHT_LAYERS_LIST(
    my_layer0_layer,
    my_layer1_layer,
    my_layer2_layer,
    my_layer3_layer
);

void keyboard_post_init_user(void) {
    // Enable the LED layers
    rgblight_layers = my_rgb_layers;
}

layer_state_t default_layer_state_set_user(layer_state_t state) {
    rgblight_set_layer_state(0, layer_state_cmp(state, _BASE));
    return state;
}

layer_state_t layer_state_set_user(layer_state_t state) {
    rgblight_set_layer_state(1, layer_state_cmp(state, _FN1));
    rgblight_set_layer_state(2, layer_state_cmp(state, _FN2));
    rgblight_set_layer_state(3, layer_state_cmp(state, _FN3));
    return state;
}
